High severity7.0NVD Advisory· Published Nov 10, 2026· Updated Nov 10, 2026
CVE-2026-121670
CVE-2026-121670
Description
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Overlay Filter allows an authorized attacker to elevate privileges locally.
Affected products
1Patches
Vulnerability mechanics
References
1News mentions
1- Microsoft November 2026 Patch Tuesday Fixes 1,093 Vulnerabilities, Including Outlook Zero-DayCyber Security News · Nov 10, 2026